package com.kingyea.mobilepolice.config;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.cache.interceptor.KeyGenerator;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;

import java.lang.reflect.Method;


@Configuration
@EnableCaching
public class RedisConfig extends CachingConfigurerSupport {

    /**
     * 自定义缓存key生成策略
     */
    @Bean
    @Override
    public KeyGenerator keyGenerator() {
        return new KeyGenerator() {
            @Override
            public Object generate(Object target, Method method, Object... params) {
                StringBuilder sb = new StringBuilder();
                sb.append(target.getClass().getName());
                sb.append(method.getName());
                for (Object obj : params) {
                    sb.append(obj.toString());
                }
                return sb.toString();
            }
        };
    }

//    /** 旧版
//     * 缓存管理器
//     */
//    @SuppressWarnings("rawtypes")
//    @Bean
//    public CacheManager cacheManager(RedisTemplate redisTemplate) {
//        RedisCacheManager rcm = new RedisCacheManager(redisTemplate);
//        //设置缓存过期时间
//        //rcm.setDefaultExpiration(60);//秒
//        return rcm;
//    }

////缓存管理器 新版
//    @Bean
//    public CacheManager cacheManager(RedisConnectionFactory connectionFactory) {
//        //user信息缓存配置
//        RedisCacheConfiguration userCacheConfiguration = RedisCacheConfiguration.defaultCacheConfig().entryTtl(Duration.ofSeconds(10)).disableCachingNullValues().prefixKeysWith("user");
//        Map<String, RedisCacheConfiguration> redisCacheConfigurationMap = new HashMap<>();
//        redisCacheConfigurationMap.put("user", userCacheConfiguration);
//        //初始化一个RedisCacheWriter
//        RedisCacheWriter redisCacheWriter = RedisCacheWriter.nonLockingRedisCacheWriter(connectionFactory);
//
//
////        设置CacheManager的值序列化方式为JdkSerializationRedisSerializer,但其实RedisCacheConfiguration默认就是使用StringRedisSerializer序列化key，JdkSerializationRedisSerializer序列化value,所以以下注释代码为默认实现
////        ClassLoader loader = this.getClass().getClassLoader();
////        JdkSerializationRedisSerializer jdkSerializer = new JdkSerializationRedisSerializer(loader);
////        RedisSerializationContext.SerializationPair<Object> pair = RedisSerializationContext.SerializationPair.fromSerializer(jdkSerializer);
////        RedisCacheConfiguration defaultCacheConfig = RedisCacheConfiguration.defaultCacheConfig().serializeValuesWith(pair);
//
//        RedisCacheConfiguration defaultCacheConfig = RedisCacheConfiguration.defaultCacheConfig();
//
//        //设置默认超过期时间是30秒
//        defaultCacheConfig.entryTtl(Duration.ofSeconds(30));
//        //初始化RedisCacheManager
//        RedisCacheManager cacheManager = new RedisCacheManager(redisCacheWriter, defaultCacheConfig, redisCacheConfigurationMap);
//        return cacheManager;
//    }

    @Bean
    public RedisTemplate<String, String> redisTemplate(RedisConnectionFactory factory) {
        StringRedisTemplate template = new StringRedisTemplate(factory);
//        RedisTemplate template = new RedisTemplate();
//        template.setConnectionFactory(factory);
        Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
        ObjectMapper om = new ObjectMapper();
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        jackson2JsonRedisSerializer.setObjectMapper(om);
        template.setValueSerializer(jackson2JsonRedisSerializer);
        template.afterPropertiesSet();
        return template;
    }

}
